Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Patent
1991-01-16
1993-03-02
Dwyer, James L.
Telephonic communications
Telephone line or system combined with diverse electrical...
Having transmission of a digital message signal over a...
358442, 379100, H04M 1100
Patent
active
051916037
ABSTRACT:
The invention provides a device to be connected to a telephone line and, alternatively, to a telephone set or a printer. The device comprises a switch device for automatically operating the one or the other connection according to the signals received through the line. When modulated telefax signals are received, they are transmitted to a modem which transforms the signals to sequential digital signals, these are stored in a buffer memory, at least to an extent corresponding to a line of print, and they are then transformed by a microcircuit to matrix digital signals, which are transferred to the printer. Fax messages transmitted through the telephone line are thus automatically printed out. The invention also provides a printer, which incorporates a modem, a buffer memory and microcircuit for performing the aforesaid operations, through which the printer may selectively be connected to a telephone line, and which may be by-passed to connect the printer to a computer. The invention also provides a message receiving system, which comprises a printer and a device for selectively connecting the system to a computer or to an interface interposed between the printer and a telephone line, which comprises a modem, a buffer memory a and microprocessor for converting sequential digital information to matrix digital information.
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Chan Ning F.
Dwyer James L.
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